Age and growth of Capoeta trutta (Pisces: Cyprinidae) from Keban Dam Lake, Turkey

Abstract

In this study the ages of Capoeta trutta (Heckel 1843) inhabiting Keban Dam Lake were determined from scales. The mean fork lengths determined using the back-calculation method were l1=70.59, l2=119.37, l3=167.53, l4=195.97, l5=221.03, l6=250.52, l7=274.63 and l8=300.38 mm for males, l1=68.87, l2=117.03, l3=166.34, l4=203.91, l5=230.17, l6=248.20, l7=267.98 and l8=294.69 mm for females, l1=63.45, l2=105.92, l3=151.54, l4=188.20, l5=212.33, l6=245.05, l7=270.85 and l8=295.97 mm for all fish samples. The calculated length of any of the age groups was always smaller than the real length measured for the same age group. The gap between calculated and measured lengths increased when the scales of older fish were used in the calculations.

CORRESPONDING AUTHOR:

Dr Rahmi Aydin, Su Urunlerin Fakultesi 23119, Elazig/ Turkey;
E-mail: raydin@firat.edu.tr